AMD Radeon R9 295X2 vs AMD Radeon R9 390 X2
Graphics Processor
| GPU model | Vesuvius | Grenada |
|---|---|---|
| GPU variant | Vesuvius XT (215-0852022) | Grenada PRO (215-0880030) |
| Architecture | GCN 2.0 | GCN 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 28 nm |
| Number of transistors | 6,200 million | 6,200 million |
| Die size | 438 mm² | 438 mm² |
Graphics Card
| Release date | Apr 29th, 2014 | Sep 3rd, 2015 |
|---|---|---|
| Generation | Volcanic Islands | Pirate Islands |
| Production | End-of-life | End-of-life |
| Launch price | 1,499 USD | 1,399 USD |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Reviews | 33 in our database | — |
| Predecessor | Sea Islands | Volcanic Islands |
| Successor | Pirate Islands | Arctic Islands |
Clocks
| GPU clock | 1018 MHz | 1000 MHz |
|---|---|---|
| Memory clock | 1250 MHz 5 Gbps effective | 1350 MHz 5.4 Gbps effective |
Memory Configuration
| Memory size | 4 GB | 8 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 512 bit | 512 bit |
| Bandwidth | 320.0 GB/s | 345.6 GB/s |
Render Configuration
| Shading units | 2816 | 2560 |
|---|---|---|
| TMUs | 176 | 160 |
| ROPs | 64 | 64 |
| Compute units | 44 | 40 |
| Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 1024 KB | 1024 KB |
Performance
| Pixel rate | 65.15 GPixel/s | 64.00 GPixel/s |
|---|---|---|
| Texture rate | 179.2 GTexel/s | 160.0 GTexel/s |
| FP32 (float) performance | 5.733 TFLOPS | 5.120 TFLOPS |
| FP64 (double) performance | 716.7 GFLOPS (1:8) | 640.0 GFLOPS (1:8) |
Dimensions & Outputs
| Slot width | Dual-slot | Triple-slot |
|---|---|---|
| Length | 307 mm 12.1 inches | — |
| Width | 114 mm 4.5 inches | — |
| Height | 42 mm 1.7 inches | — |
| TDP | 500 W | 580 W |
| Suggested PSU | 900 W | 950 W |
| Outputs | 1x DVI4x mini-DisplayPort | 2x DVI1x HDMI1x DisplayPort |
| Power connectors | 3x 8-pin | 4x 8-pin |
| Board number | C673-A7 | C671 |
API Support & Features
| DirectX | 12 (12_0) | 12 (12_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 2.0 |
| Vulkan | 1.2 | 1.2 |
| Shader model | 6.3 | 6.3 |
